Aries Archive [sdiy] how to build a cv keyboard

[Seb Francis]

Ingo Debus wrote:

> > Perhaps one of the "nice" things is the fact that the notes are not exactly in tune with each other?  With a MIDI-CV with a decent DAC the notes really are exactly equal temperament, probably not so for an analog keyboard.
>
> Not sure that this is true. An analog keyboard (V/oct) is a string of
> resistors - so the main error source should be resistor tolerance.
> With 1% resistors this can be pretty accurate.

right, accurate, but not exact.  you'd be suprised what difference little inaccuracies make (one of the reasons analog sounds better than digital IMO).  1% of a semitone is 1 cent which is probably barely audible, but the effect of each resistor's tolerance is cumulative (although hopefully it averages out to something pretty near to in tune).

Sen